gpio/samsung: only register available gpio banks
gpio/samsung: only register available gpio banks

Only register gpio banks provided by SoC instead of the maximum possible
to lessen confusion, get rid of a warning from gpiolib and stop it from
eating into the extra gpios for configs with S3C24XX_GPIO_EXTRA != 0.

Signed-off-by: Peter Korsgaard <109eb201e07c93b5f5b6b8c6537366649a85e9a2@sunsite.dk>
Signed-off-by: Kukjin Kim <3fc711f4e08bc570a586748633ff7c76d0e1e253@samsung.com>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas